7209 stry MasteringChemistry Chapter 3-Google Chome Secure https//session master

Question

7209 stry MasteringChemistry Chapter 3-Google Chome Secure https//session masteringchemistry C Chapter 3 Problem 3.62 ewassignmentProble97505281offset prey C18 of 19 Conntants1 Periodic Table and Part A The readtion between potassium superoxide, KO CO2 How many moles of Oy are produced when 0425 mol of KOp eacts in this asn Express your answer with the appropriate unis is used as a source of Op and aboorber of CO, in se contained breathing equipment used by resoue workers Figare 1) 567 mol X Incorrect Try Again; 5 atempts remaining Parts Figure How many grams of KO aneeded to fom 7 5gof 0 Express your answer with the appropriate units yValue Units -Part C How many grams of COs ae used when 7 5g of are produced

Explanation / Answer

A.

From the balanced equation,

4 mol KO2 porduces 3 mol O2

Then,

0.425 mol KO2 produces 3 * 0.425 / 4 = 0.319 mol of O2

B.

From the balanced equation,

3 mol of O2 is obtained from 4 mol of KO2

3 * 32 g. of O2 is obtained from 4 * 71 g. of KO2

Then,

7.5 g. of O2 is obtained from 7.5 * 4 * 71 / (3 * 32) = 22.2 g. of KO2

C.

3 * 32 g. of O2 is produced from 2 * 44 g. of CO2

Then,

7.5 g. of O2 is produced from 2 * 44 * 7.5 / (3* 32) = 6.88 g. of CO2

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